Fix runClient/Server tasks not always including the mod

src/main/java/net/fabricmc/loom/AbstractPlugin.java

@@ -316,6 +316,7 @@ public class AbstractPlugin implements Plugin<Project> {
 					remapJarTask.getInput().set(jarTask.getArchivePath());
 				}
 
+				extension.addUnmappedMod(jarTask.getArchivePath().toPath());
 				remapJarTask.getAddNestedDependencies().set(true);
 
 				remapJarTask.doLast(task -> project1.getArtifacts().add("archives", remapJarTask.getArchivePath()));

src/main/java/net/fabricmc/loom/task/RemapJarTask.java

@@ -124,8 +124,6 @@ public class RemapJarTask extends Jar {
 			}
 		}
 
-		extension.addUnmappedMod(input);
-
 		/*try {
 			if (modJar.exists()) {
 				Files.move(modJar, modJarUnmappedCopy);